Gabriel Naudé was a French librarian and scholar. He was a prolific writer who produced works on many subjects including politics, religion, history and the supernatural. An influential work on library science was the 1627 book Advice on Establishing a Library. Naudé was later able to put into practice all the ideas he had put forth in Advice, when he was given the opportunity to build and maintain the Bibliothèque Mazarine, the library of Cardinal Jules Mazarin at Paris.

A librarian is a person who works professionally in a library providing access to information, and sometimes social or technical programming, or instruction on information literacy to users.